He has lots of genes in him. You will get marble from the female, maybe not in the traditional koi colors.
He def has some Cambodian. I agree with you, you might get nice Koi by f3. F2 will mostly be cambodian w/ some marble, since the FEM has cambo with marble. This is only my guess.
Can't wait to see the result hehehe. I'm getting excited for this spawn after all this talk.